2013 Mercedes-Benz SL63 AMG Revealed [Photo Gallery] image

Mercedes-Benz launched its new AMG-badged Formula One race car yesterday in Spain. On the same time, the German automaker also unexpectedly unveiled its next iteration of the SL 63 AMG.

So what’s new: the new SL 63 will be 275 pounds lighter due to greater use of aluminum. The vehicle will be available with a choice of two power outputs for the first time.

The AMG 5.5-litre V8 ‘biturbo’ (twin-turbocharged) engine delivers 395 kW (537 hp) and 800 Nm of torque. If the AMG Performance package is specified, these figures rise to 415 kW (564 hp) and 900 Nm.

The result is high-calibre performance, as underlined by the acceleration from 0 to 100 km/h in 4.3 or 4.2 seconds, and to 200 km/h in 12.9 or 12.6 seconds respectively. Top speed is 250 km/h (electronically limited), although this rises to 300 km/h (likewise electronically limited) with the AMG Performance package on board.

In both cases, power is sent to the rear wheels through AMG’s trusty Speedshift seven-speed automated-manual transmission.

The SL 63 AMG also benefits from performance suspension, 19-inch alloy wheels.

Huge brakes – 390mm discs and six-piston calipers up front, 360mm discs and single floating calipers at the rear – provide the essential stopping power.

There are improvements in efficiency, too, however. NEDC combined consumption comes in at 9.9 litres per 100 kilometres for both power outputs – a full 4.2 litres or 30 percent lower than for the outgoing model Mercedes said.

Pricing and other details are expected to be available during the 2012 Geneva Motor Show.